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package com.sun.enterprise.v3.services.impl;
import com.sun.grizzly.Context;
import com.sun.grizzly.TCPSelectorHandler;
import com.sun.grizzly.http.SelectorThread;
import com.sun.grizzly.SelectorHandler;
import com.sun.grizzly.Controller;
import java.io.IOException;
import java.util.Collection;
import java.util.logging.Logger;
import java.nio.channels.SelectableChannel;
import java.nio.channels.SelectionKey;
import org.glassfish.internal.grizzly.LazyServiceInitializer;
/**
* {@link SelectorHandler} implementation {@link SelectorThread}
* passes to {@link Controller}. It dumbs down
* {@link TCPSelectorHandler}, to make it just good enough
* for the light weight listener
*
* @author Vijay Ramachandran
*/
public class ServiceInitializerHandler extends TCPSelectorHandler {
private ServiceInitializerThread selectorThread;
private volatile LazyServiceInitializer targetInitializer = null;
private Collection<LazyServiceInitializer> initializerImplList = null;
protected static final Logger logger = Logger.getLogger(ServiceInitializerHandler.class.getName());
private final Object LOCK_OBJ = new Object();
private long timeout = 60000;
public ServiceInitializerHandler(ServiceInitializerThread selectorThread) {
this.selectorThread = selectorThread;
initializerImplList = selectorThread.getHabitat().getAllByContract(LazyServiceInitializer.class);
setSelectTimeout(timeout);
}
public void setSelectorThread(ServiceInitializerThread selectorThread) {
this.selectorThread = selectorThread;
}
@Override
public boolean onAcceptInterest(SelectionKey key, Context ctx) throws IOException{
if(initializerImplList == null) {
logger.severe("NO Lazy Initialiser was found for port = " +
selectorThread.getGrizzlyListener().getListener().getPort());
return false;
}
SelectableChannel channel = acceptWithoutRegistration(key);
if(targetInitializer == null) {
synchronized (LOCK_OBJ) {
LazyServiceInitializer localInitializer = targetInitializer;
if (localInitializer == null) {
for (LazyServiceInitializer initializer : initializerImplList) {
String listenerName = selectorThread.getGrizzlyListener().getListener().getName();
if (listenerName.equalsIgnoreCase(initializer.getServiceName())) {
localInitializer = initializer;
break;
}
}
if (localInitializer == null) {
logger.severe("NO Lazy Initialiser implementation was found for port = "
+ selectorThread.getGrizzlyListener().getListener().getPort());
return false;
}
if (!localInitializer.initializeService()) {
logger.severe("Lazy Service initialization failed for port = "
+ selectorThread.getGrizzlyListener().getListener().getPort());
return false;
}
targetInitializer = localInitializer;
}
}
}
if (channel != null) {
targetInitializer.handleRequest(channel);
}
return false;
}
}